how do i change an image if i click on a button in Swift? [duplicate]

Answer 1

first of all you need to give tag to UIButton

    @IBOutlet var btn: UIButton!
    let circleArray = ["circle-gray-big","circle-green-big","circle-red-big"]

    override func viewDidLoad() {
            super.viewDidLoad()
            see.btn.tag = 0
    }

    @IBAction func carbsButton(_ sender: Any) {
            button.setImage(UIImage(named: circleArray[btn.tag % 3]),forState:Normal)
            btn.tag = ban.tag + 1          
    }

Do in this manner you will definitely get what you want..If it solve the problem hit up arrow.